HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Adelaide

$1,271+ Cheap flights from Dulles Intl (IAD) to Adelaide (ADL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — ADL
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Dulles Intl to Adelaide with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Dulles Intl to Adelaide

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Adelaide (ADL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$1,384
(FlightHub)

One-way from

$1,271
(United Airlines)

Popular in

December

Cheapest in

March

Average price

$1,654
From Washington, D.C. Dulles Intl to Adelaide
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Adelaide
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($558 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($100 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Dulles Intl to Adelaide

Cheapest flights from Dulles Intl to Adelaide
Explore the most affordable flight options available from Dulles Intl to Adelaide. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This FlightHub deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:35 pmIAD - ADL
2 stops31h 50mAir New Zealand
Thu 11/611:55 amADL - IAD
2 stops25h 01mAir New Zealand
Deal found 9/9$1,384
This Fiji Airways deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Fiji Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/15:37 pmIAD - ADL
2 stops28h 08mMultiple Airlines
Thu 11/61:15 pmADL - IAD
2 stops24h 33mMultiple Airlines
Deal found 9/9$1,427
This Air New Zealand deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/912:41 pmIAD - ADL
2 stops30h 44mAir New Zealand
Fri 1/911:55 amADL - IAD
2 stops24h 24mAir New Zealand
Deal found 9/9$1,536
This Air New Zealand deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air New Zealand is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/83:23 pmIAD - ADL
2 stops28h 02mAir New Zealand
Fri 1/911:55 amADL - IAD
2 stops24h 24mAir New Zealand
Deal found 9/9$1,537
This oojo deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/257:00 amIAD - ADL
2 stops37h 25mAir New Zealand
Sat 11/16:25 amADL - IAD
2 stops29h 30mAir New Zealand
Deal found 9/9$1,596
This Mytrip deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/267:44 pmIAD - ADL
2 stops33h 01mAir New Zealand
Sun 11/211:55 amADL - IAD
2 stops28h 31mAir New Zealand
Deal found 9/11$1,646
This FlightHub deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/159:00 pmIAD - ADL
1 stop29h 20mQatar Airways
Mon 9/296:00 amADL - IAD
2 stops47h 10mQatar Airways
Deal found 9/10$1,751
This Air Canada deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/212:25 pmIAD - ADL
3 stops33h 00mAir Canada
Mon 10/277:55 pmADL - IAD
3 stops39h 04mAir Canada
Deal found 9/11$1,786

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Adelaide that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Adelaide that are best for you.

Fly from

Dulles Intl

Fly to

Adelaide

Route

Depart

Return

Price

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Wed 10/29

12:35 pm-10:55 am

2 stops31h 50m

Adelaide

Thu 11/6

11:55 am-9:26 pm

2 stops25h 01m

$1,384

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 11/1

5:37 pm-12:15 pm

2 stops28h 08m

Adelaide

Thu 11/6

1:15 pm-10:18 pm

2 stops24h 33m

$1,427

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Tue 12/9

12:41 pm-10:55 am

2 stops30h 44m

Adelaide

Fri 1/9

11:55 am-8:49 pm

2 stops24h 24m

$1,536

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 2/14

12:40 pm-10:55 am

2 stops30h 45m

Adelaide

Sat 3/14

6:00 am-12:24 am

2 stops32h 54m

$1,554

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sun 10/26

7:44 pm-7:15 pm

2 stops33h 01m

Adelaide

Sun 11/2

11:55 am-1:56 am

2 stops28h 31m

$1,646

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 2/14

10:05 pm-1:55 pm

3 stops48h 20m

Adelaide

Sat 3/14

6:00 am-8:29 pm

3 stops28h 59m

$1,796

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Fri 10/24

10:45 am-10:55 am

2 stops33h 40m

Adelaide

Fri 10/31

11:55 am-7:21 am

2 stops33h 56m

$1,856

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 10/9

3:36 pm-4:10 pm

3 stops34h 04m

Adelaide

Thu 10/16

8:00 pm-9:25 pm

3 stops39h 55m

$1,876

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Sat 10/11

10:14 pm-8:15 am

2 stops67h 31m

Adelaide

Sun 12/21

11:55 am-11:49 pm

2 stops27h 24m

$1,906

Washington, D.C.Adelaide

IAD - ADL

IADADL

Washington, D.C. Dulles Intl

Thu 10/23

12:35 pm-1:15 pm

2 stops34h 10m

$1,271

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 17 results
1
2

Best time to book a flight from Dulles Intl to Adelaide

Have a flexible travel schedule? Discover the best time to fly to Adelaide from Dulles Intl with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Adelaide

What is the cheapest time of day to fly from IAD to ADL?

Find hourly flight availability from Dulles Intl to Adelaide. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Washington, D.C. Dulles Intl Airport to Adelaide as you normally would.

Reviews of airlines servicing Adelaide

Get insights into the airlines that provide service to Adelaide. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Adelaide. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with Qantas Airways from Washington, D.C. Dulles Intl Airport to Adelaide to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Qantas Airways
7.5
Good
905 reviews

Food

6.9

Boarding

7.7

Overall

7.5

Entertainment

7.2

Crew

8.2

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.
Qantas Airways
7.5
Good
905 reviews
Qantas Airways
7.5
Good
905 reviews

Food

6.9

Boarding

7.7

Overall

7.5

Entertainment

7.2

Crew

8.2

Comfort

7.5

Reviews

1 / 20
2.0
Mediocre

Anonymous,Jul 2025

MEL - SYD

Flight cancelled 2hours before take off after checking in. Booked by airline on flight 6 hours later. No compensation or vouchers till we asked just before the flight took off.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to Adelaide. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Adelaide from Washington, D.C. Dulles Intl?

    Located just 4.1 mi from the city center, Adelaide is the airport most travelers will use when flying to Adelaide from Washington, D.C. Dulles Intl. Booking flights from Washington, D.C. Dulles Intl to Adelaide (ADL) should be relatively easy as there are 0 daily inbound flights from Washington, D.C. Dulles Intl from 1 airline.

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Adelaide?

    Departing from Washington, D.C. Dulles Intl Airport to Adelaide will take you 31h 50m. The distance between Washington, D.C. Dulles Intl Airport and Adelaide is about 10437 mi.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Adelaide round-trip?

    Flying on Qantas Airways is currently your cheapest option to Adelaide, with prices starting at $1,070. Qantas Airways is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Dulles Intl to Adelaide that include hotel bookings?

    Yes. In addition to deals on Dulles Intl to Adelaide flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Dulles Intl to Adelaide?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Dulles Intl to Adelaide.

  • Can I find deals for business class flights from Dulles Intl to Adelaide?

    Yes. Cheapflights offers flight deals from Dulles Intl to Adelaide by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to Adelaide?

    Currently, August is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Adelaide (average of $1,214). Flying from Washington, D.C. Dulles Intl Airport to Adelaide in December is currently the most expensive (average of $2,057). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Adelaide?

Book flights to Adelaide if you plan to visit one of these locations
Glenelg

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top airline flying from Dulles Intl to Adelaide

Discover the top airline that operate flights from Dulles Intl to Adelaide. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
Qantas AirwaysCheapest$1,070Average$1,283FlexibilityNo cancel feeOn-time74%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.